Do the reeds have a front and a back?

The two reeds of an oboe are carved to be equally thin and to have the same curve, but they are made from natural materials and shaped by the human hand, so there are subtle differences. Therefore, the front side could have a better timbre, the back side could be better at producing soft sounds, and there could be other such differences in characteristics. Thus, players sometimes flip over their reeds during the intervals in performances to produce the desired tones.